Gearing



G. W. MONTGOMERY.

GEARING.

APPLICATION FILED JAN.1. I918.

Patented Nov. 25, 1919 INVENTOR,

ATTORNEY- EORGE W.' 'M 1 ITG ME RY or enannywmn, MARYLAND.

GEARING.

To all whom it may cimomf l Be it known, that I, Gnonen MONTGOM- ERY,a citizen ofthe' United States, residing at Brandywine, iin the county of Prince .5 Georges and State of Marylandfhave in-- vented certain new-and useful Improvements in Gearings, of" which the} following -is a specification.- i"

This invention has. relation to i. gearing, and'has for anobject to-proivde-a gearing of a novel type adapted to transmit rotary motion from a revoluble member rotating aboutjone axis to another revoluble member rotatable about an axis at right angles to the axis of the first member.

- Another object of :theinvention is to provide an improved driving mechanismlfor" a traction engine embodying a type ofgearing of my inventioln-asset forth-alcove.-

' A still furtherfobject .offthe" invention is to providea traction: engineadapted to be operated by. {means 0'15 an internal combustion engine or similar prime mover, a drivingmechanism :for. the rear wheels embodying agearing of my invention, and a driving mechanism for a forward steering wheel-embodying the principles of my invention, and means whereby the wheel may berotated to steer the machine and whereby said steering 'wheel' may be driven in any position thereof relative to the traction engine. I r

Inv addition to the foregoing my invention comprehends improvements in the details of construction and arrangement-of the parts to be hereinafter more fully described and particularly "setf forth in 'the appended claims. I

In the accompanying drawings in which simila'rand correspoi'i'dmg part's are designated by the same char'actersiof reference throughout the "s'ever'al-views-in which they pp a Figure, 1, is'a view intop p1an with parts bodying my improvements.

' j' Fig. 2, 's ajview'o'fth'e traction engine V in side/elevation "illustratingthesteering mechanism.

I ing'p'ersa'ofinv 1 Fig.- 4, 1s a view o the gearing in s de ;elevat10n,-and "j Fig. 5, lis adetail" View 'ins'ection'taken Specification of Letters iiatent.

broken away of "a traction engine'em Fig.3, isaview in'top plan'o'f the gear 1' Patented Nov. as, rare.

i Applicationfil ed January 7,- i918. Serial'No. 210,674. I

through the bearing of one of the roller niembers ofmy improved gearing.

Wlth reference .to the drawings, and par 'ticularly Figs. 3 to 5-inclusive, in which the gearing of my invention is set forth 1n detail, 10 indicates a worm having two sets or threads, oneset at each end indicated .at 11 and 12, each threadlbeing of slightly 1 more than one convolution, and the threads formed in o pposite'directions, that is left hand, and right hand'for a purpose which will be presently obvious. Mounted at opposite sidesof the worm in proximity to the threads '11 is "a pair of disks 13 and each disk carries upon'its inner face a. plurality --of; rollers indicated-at 14:. Therollers are arranged in uniformly spaced circumferem tial order and the disks are arrangedrelative to the worm 10 so asto cause the prolonged axes of the rollersil tointersect success vely the longitudinal axis of the worm fiA- second pair of disks 15 is pro vided, one at each side of the worm. inproX- .imity to the threads 12 thereof. j The pairs of disksare connected .with each other. so as to rotate; oppositely and in j unison: TAs shown, this is accomplished by' providing thedisks; 'with. peripheral. teeth. whereby mutual meshing. engagement, -,the same-beworm so as to cause theirirollersl i tosuc- *cessively enter the spaces betweenthe convolutionsof the threads asecl'earlyfshown in Figs. 3 and 4. With reference. toFi-g. 5

of the drawings it will be seen that each roller'i-l l is formed with a conicalext'ension I 16 inone side face to enter. arecess '17 :Within a, flange 18 formed. upon the inner-gface of either the gear 13 01"15, and theiconical 1 extension is formed with a bolt l9jwhich passes through an opening 20 in said. gear and projects beyond the opposite side thereer. "The bolt extends through a'recessf 2'1 7 similar to the recess 17 within janannular flange 22 formed upon the outer face of the they become gears, and'thediskszor gears :13.and 15 ataone side of the iwornizare "in 7 against the bearings.

or 7 gear, and a conical bearingmember 23 is applied to the bolt and entered into said recess as clearly shown. Spherical bearing members24 are inserted in the recesses 17 and 21 and are held betweenthe conical member 16 and the inner Wall of the recess 17, and between the inner wall of the recess, '21 and the conical member 23 thereby mounting the roller 14 for free rotation A. nut 25 is applied tov without friction.

the bolt to tighten the conical members From theforegoing, it willbe obvious that if the worm 10 is rotated, a turning; movement will be applied to the gears E15. by 7 reason of theengagement ofthe rollers 114'- thereof within the threads 12 to rotate both I of said gears in thesame direction "It will loe. also obvious that inasmuch as the threads 11 are formed oppositelyto the threads l2' the gears 13 will be'likewiserotated, both in the same direction, bun-in a direction -opposite to the direction of rotation of the gears 15. As the gears Band 15 are-1n mesh the power will be: applied uniformly a to vboth sets-of gears and the power maybe taken from either set ofgearsor from both.

As'a'specific adaptation of-my invention,

I have disclosed in Figs. 1 and 12' ofthe drawings, :a traction {engine including o a frame, 26,'forrned of longitudmalmembers connected 'at' their; forward ends "by means sion mechanism of'conventional type including a reversev gear located: ithin n g v ing iuj to. a propeller shaft 35 extending longitudinally. f: the frame and entering the' 'gear casing j 32. The prop'ellenshaft ;35 v is connected directly to the wormv wh ch. is: mo unte dflbetweenf the gears al3- mounted within the gear casing 32,-the gears rotatingv about an axis coincident with the i axis-ofthe driven shafts29and 30 ofthe Jh'owever, the'gearsfl5 are connected by is formedvu'pon one end. with a p'air'of" V oppositelyiextendingarms 137 gformingf-a part'of'a' diiferential mechanism; The Vex- 'tremiti'es hf thearms 37 carry :orbitally Y movable "bevel "gears 38- for meshing engagement withgears 39 and, 40 mounte'd "on V the inner terminals ofgthe shaft and '30 ,respectively. M V I I l V -'It.wi-11'be obvious from the foregomg that ofithe transmissionmechanism; it will The 1 obvious-that; a traction engine 'mayfbe caused the-power ofrthe propeller shaft -may be transmitted to the gears 15 which are caused to rotate'in unison, and by thus causing roequally to both shafts 29 'a11d'30 byf'reason tation of the arms 37rcpower is transmitted 7 7'0- ;ofthe operation of the difl'erentialimechan ism' in the usual manner." The gears-l3 of N my lmproved transmlssion gearlngf' are mountedto rotate idly in bearingsv in-the gear ca'sing-, 32,;and serve onlytol equalize and thrust on :the worm shaft and thereby increase the efliciencyof the gearingas an entirety. By act'uatmg {the revers ng gear .to '7 travel in arearward.direction stance is indicated at 41 and located at the It is my objectalso to applygpowerto i thesteering, wheel' which in thepresent insupported. The bearings 42fdependfroma circularplate- 44 inclosed within the-"semic rcular portion '27'of the frameof the traction machine, and the axle 43 carries bevel therein, The upper end 0f each shaft '47;

7 gears; 45 in meshing-engagement with bevel 7 .gears 46 .locafiedwupon the (lower end of shafts 47, which ar eextended at their npper endsithrough" the .pla-ter44 gaiidg'journaled gagement with bevel gear 49, {one of :whi'ch is mounted; upon each endgof a horizontal driven shaftfiO mounted inI-"bearingsupon the upper surfaceofthe circularplate 44. t T fl. he driven shaft50 carries adjacent its-in termediateportiona pair of -disksfil which.'

"serv'e the'purpose of either ofthe gears 18' -or,1 5;,., It will-be notedhowever, that inasmuch.as onlyoone pair of dislrfsfilj is pro vi ded-,--th,e formation-[of peripheral teeth 7 v thereon is not necessary as in the case of: 7

the ,gears 13 v 211K115, Eachl dislrhl, flibw ever, carries' upon itsinnerface a plurality c 3 ofurollers similar to the rollers 114,; :for en}- ga'gemen't with a vertical wonn 52 journaled -at itsw lower end vin abeari'ng atethe-iexact center of theiplate 44 and. at its upper end" 1 'inka; bearing 53 finding a support upon the plate 44 and this worm shaft stand directly. over the centerof the axle 43.); Ther upper traction Wheels. In. the present instance,

end ;of the wor1n152fcarries- V a beveled ig'e'ar beveled-gear '55 ,mounte'd upon .aehorizont'al- 54 which is in meshing engagementwithe -th f i means ofa sleeve' shaft 36 through which the-driven shaft 30 extends, and theosleeve shaft 56 journaledat' itsinner end in abear ing 57 encircling loos'ely the worm152,;and

in abearing58 finding-arigi d support upon the mainframe ofthej traction engine? The propeller shaft-$5. its-provided with ahevel, gear 59 which ism meshingfengagementwith.

a bevel gear 60'mounted' upon a transversely extending shaft ;6l jou rnaled in "bearings it formed on the transmission case and main frame ofthe' tractionengine, said shaft 611 carrying a sprocket wheel 62 around which is transmitted to the disks 51, which in turn rotate the driven shaft 50, and the power of the latter is transmitted through the gears 49 and 48 to the shaft 47 and thence through the gears 4-5 and 46 to the ground or steering I wheel 41. The upper face of the circular disk at is formed with an arcuate series of raclrteeth 65 for engagement by means of a pinion 66 mounted upon the outer end of the steering rod 67 having its inner end located adjacent the drivers seat and provided with a steering wheel 68. The circular plate 44 may thus be rotated, directing the steering wheel 41 in any direction desired so as to cause the vehicle to travel to the right or w the left, it being obvious thatpower will be transmitted continuously to the steering wheel regardless of its position relative to the frame of the vehicle.

It will thus be seen that I have provided a gearing which is applicable to transmit power to the supporting wheels of a traction engine, and I lay particular stress upon my improvement in view of the fact that it provides a balanced structure receiving power uniformly to all parts with the result thatfriction is reduced and the durability and wearing qualities of the gearing enhanced. Other uses and advantages will readily occur to those skilled in the art to which this invention appertains.

While I have illustrated and described my invention with some degree ofparticularity I realize that in practice various alterations. thereover may be made, and I therefore desire to reserve the right and privilege of changing the form of the details of construction, or otherwise altering the arrangement of the correlative parts without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. In agearing, a gear having a plurality of circumferentially arranged transverse openings through its body and recesses in each face around said openings, a plurality of rollers, each including a bolt passing through one of said openings and a conical bearing member at the junction of the roller and bolt for insertion in one recess, a second corneal member applled to the other end of the bolt for insertion in theopposite recess,

a nut threaded on thebolt to hold the second bearing member in place, and balls in the recesses between the walls thereof and the conical members.

In a gearing, the combination with a propeller shaft, and a worm driven thereby and having. two threads of opposite pitch; of a pair of intermeshing gears alongside the worm, one gear having rollers engaged by one thread and the other gear having rollers engaged by the other thread, and a driven shaft connected with one of said gears.

3. In a gearing, the combination with a propeller shaft, and a worm driven thereby and having two threads of opposite pitch; of a pair of gears at opposite sides of the worm and having-rollers engaged by one thread, a driven shaft on which'said gears are fast, and a second pair of gears idly mounted at opposite sides of .the worm and having rollers engaged by the other thread, i

engaged by the threads in one ofsaid sets,

the ears beinglocated oppositeeach other 1n palrs, and connectlons between one pair and the driven shaft.

In testimony whereof I ailix my signature in presence of a witness. GEORGE W. MONTGOMERY. Witness: V

M. E.'Jo1vns. 

